2009高考真题汇编2-名词性从句

One of the most important questions they had to consider was _____ of public health.

A．what

B．this

C．that

D．which

It is obvious to the studentsthey should get well prepared for their future.

Could I speak tois in charge of International Sales please?

－Is there any possibilityyou could pick me up at the airport?
－No problem.

The last time we had great fun was _____ we were visiting the Water Park.